How to enable textbox nested inside gridview in rowediting ?

Question

protected void MyGrid_RowEditing(object sender, GridViewEditEventArgs e)
{
string CampID;
//int id = Convert.ToInt32(MyGrid.DataKeys[e.].ToString());
CampID = (Session["CampaignID"].ToString());
mf.UpdateStatus(CampID, 'X');
MyGrid.EditIndex = e.NewEditIndex;
//string lblOfferType = MyGrid.Rows[e.NewEditIndex].Cells[4].Text;
GridViewRow currentRow = this.MyGrid.Rows[e.NewEditIndex];

string lblOfferType = (currentRow.FindControl("lblOffer_Type") as Label).Text;
//string freeQty = (currentRow.FindControl("txtFree_Qty") as TextBox).Text;
//string discPercent = (currentRow.FindControl("txtDisc_Percent") as TextBox).Text;
//TextBox discValue = (currentRow.FindControl("txtDisc_Value") as TextBox);
//string offerPrice = (currentRow.FindControl("txtOffer_Price") as TextBox).Text;
//string freeArticle = (currentRow.FindControl("txtFree_Article") as TextBox).Text;

if (lblOfferType == "VALUE DISCOUNT")
{
GridViewRow row = (GridViewRow)((Control)sender).NamingContainer;
GridViewRow currentRow1 = this.MyGrid.Rows[e.NewEditIndex];
((TextBox)MyGrid.Rows[e.NewEditIndex].FindControl("txtDisc_Value")).Enabled = false;

}
}

Error: Object reference not set to an instance.

Piyush Pansuriya · Answer

Hello, Try This : if (lblOfferType == "VALUE DISCOUNT" ) { GridViewRow row = (GridViewRow)((Control)sender).NamingContainer; (row.FindControl( "txtDisc_Value" ) as TextBox).Enabled = True ; }

Piyush Pansuriya · Answer

Yes, Thought right.! Your code is perfect. but try this : (MyGrid.Rows[e.NewEditIndex].FindControl( "txtDisc_Value" ) as TextBox).Enabled = false ; And Make sure your textbox name is same as you defined.

Piyush Pansuriya · Answer

Hello, On which line you are getting error? I thing there should be a casting problem while finding a control in DataGridRow.

Pawan Kumar Tiwari · Answer

If you are calling any created method then not to fined directly textbox because its a gridview control If you written in between method then this types you write then find all the controls label or textbox etc foreach (GridViewRow row in grdcustomer.Rows) { string cusid = ((Label)row.FindControl( "grdtxtcusid" )).Text; string cusname = ((TextBox)row.FindControl( "grdtxtcustomername" )).Text; } change you control id as you given. or you can used this string employeeid = ((TextBox)e.Item.FindControl( "txtemployeeid" )).Text;

Anurag Sharma · Answer

Yes i want it the enabling to be true

Piyush Pansuriya · Answer

Hello, What do you want to do? Enable / Disable ? Here your code is TextBox.Enable = False; and you are asking for TextBox.Enable = True;

Anurag Sharma · Answer

TextBox name is correct. But when i call the method for gridview reloading it's enabling the textbox to true MyGrid.EditIndex = e.NewEditIndex; refreshdata(); //LIKE THIS //string lblSalesmanCustomers = ((TextBox)currentRow.Cells[12].FindControl("txtDisc_Value")).Text; //string freeQty = (currentRow.FindControl("txtFree_Qty") as TextBox).Text; //string discPercent = (currentRow.FindControl("txtDisc_Percent") as TextBox).Text; //TextBox discValue = (currentRow.FindControl("txtDisc_Value") as TextBox); //string offerPrice = (currentRow.FindControl("txtOffer_Price") as TextBox).Text; //string freeArticle = (currentRow.FindControl("txtFree_Article") as TextBox).Text; if (lblOfferType == "VALUE DISCOUNT") { (MyGrid.Rows[e.NewEditIndex].Cells[12].Controls[1] as TextBox).Enabled = true; LIKE THIS in comment where the method is called.

Anurag Sharma · Answer

((TextBox)MyGrid.Rows[e.NewEditIndex].FindControl("txtDisc_Value")).Enabled = false; This line showing error as "object reference not set to an instance."

How to enable textbox nested inside gridview in rowediting ?

Answers (8)